<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>组件父子通信</title>
    <script src="./lib/vue2.6.11.js" ></script>
</head>
<body>
<div id="app">
    <!--调用组件-->
    <!--<alert msg="我是自定义msg"></alert>-->
    <user username="wss"></user>
</div>
</body>
</html>
<script src="./js/zujianfuzitongxin.js" ></script>